Humminbird Transducer Side Imaging and Dual Beam Splitter Cable AS SIDB Y: * Use 2 transducers on 1 unit without a transducer switch * Best for improved high-speed performance for bottom tracking * Used with side imaging products only * Also used in conjunction with a dual beam transducer only * For use with: 797c2 SI, 797c2I SI, 798C SI, 798ci SI HD, 898c SI, 981C SI, 987C SI, 997c SI, 998c SI, 1197c SI, 1198c SI * Model# 720055-1